Resistor: XTR X11 (11ohm) Chevrolet the only other store offering

the only other store offering these bulbs that are verifiably real Philips is offering them for $300 for a set

referred to as the J2 Series

Color Changing: Available in the original straight up RGB flavor

Perfect for retrofitting a pair of hi/lo Bi-xenon projectors or HIDs in your bike's two reflectors

Resistor: XTR X11 (11ohm) Chevrolet the only other store offering11 Ohm 21W Load Resistors: Load resistors are regularly required in many vehicles to fix the dreaded 'Lamp Out' warning light on the dash, or the annoying hyper flash after changing out the stock bulbs to LED or HID. LED and HID lighting upgrades typically draw less power then OEM incandescent or halogen bulbs, which makes your vehicle think that there's a problem hence the error code. More Tech Info: XenonDepot's XD11 11 Ohm 21W (1% tolerance)